Container



D. BENSEL CONTAINER Feb. 14, 1939.

' Filed se 't. 28, 1933 2 Sheets-Sheet 1 INVENTOR Jmyza Banal ATTORNEY p, BENSEL Feb. 14, 1939.

CONTAINER 1933 v 2 Sheets-Sheet 2 Filed Sept. 28,

INVENTOR Jury: flelzsel ATTO'RNEY memes Feb. 14,1939 2,147,117

UNiTED STATES PATENT OFFICE CONTAINER Duryea Bensel, Beechhurst, Long Island, N. Y., assignor to Bcnsci Corporation, a corporation of Delaware Application September 28, 1933, Serial No. 691285 28 Claims. (Cl. 229+55) One object of the present invention is to prois, both the builder sheet aforesaid, and a lighter vide an inexpensive self-complete. container and more freely flexible blank, the sealer sheet which, while seamless all over except for a sinaforesaid, are given such foldings, as well as gle closing seam, can be hermetically sealed at other special ones, not only to have said consaid seam .and can properly package any wet tainer built up of one satchel-shape structure 5 or dry product, and which, at the same time, within another, but to provide all the advantages although including a single substantially recof the invention including those hereinabove tangular blank folded in a way to make the stated. v a container a satchel-type one, is built up from a Among other objects of the invention, beyond 0 plurality of blanks of such dissimilar physical. the provision of a self-sustaining and hermetiqualities and so interfolded one with another as cally sealed container folded up from a plurality to insure that said single seam provides the of blanks so as to be seamless all over except at aforesaid seal while establishing the filled consuch seal, are (a) to provide a top seam structure 1 tainer as a self-sustaining one. By a self-comin an otherwise seamless container such that an plete container is meant one which is the entire element of said seam structure can be practicably 15 packaging structure to be delivered to' the purand quickly severed along a part of the seam chaser of the product in such container; and length, but without causing or endangering a by a self-sustaining container is meant one which, breakdown of the container, to facilitate convenwhen folded up and seamed closed after being lent dispensing; b) to provide container porn filled with such product, will withstand, without tions which, following such a severing, are easily weakening at or damage to said seam and withand safely transformable into an ideal pouring out breakdown anywhere, such pressures and imspout to assist in such dispensing, not only withpacts as a filled carton of the side-seamed type out causing a breakdown of the container but I as ordinarilymade from pressboard' of the comwithout having to be freed for such transformamonly used thicknesses or weights is normally tion as the result, during or ancillary to such 25 subjected to incidental to transportation and severing, of bodily removing any part of said other hflndllngseam structure or of otherwise modifying the A container as above described is provided, relation of said seam structure to the side walls according to the present invention, by interof the container except by dividing said seam folding a heavier blank, hereinafter called the structure, along the line of said severing, into builder sheet, and a lighter blank, hereinafter substantially similar seam-structure halves; (0) called the sealer sheet, and so differentially shapto provide an arrangement of parts such that a ing these two sheets and so relating them as to handle or pull device for facilitating formation their interfoldings that while both sheets coact of said pouring spout can be permanently atto establish the stngle closing seam and to make tached to the container yet in a manner to avoid the latter a hermetically sealed one, the builder breaking the airtightness oi the container where sheet at the same time acts as the backbone" said device is attached thereto; (11) to provide a of the container because by its inclusion in the seam structure so constituted that following a combination it insures that the container shall severing along a length thereof as above. and be B ining one. Others in the art have following formation and use of the spout for (115- P posed taking a substantially rectangular pensing and a restoration of the spout-forming blank of thin waxed paper or the like and foldparts to their original condition, the severed ing the same to provide a satchel-dike envelope seam parts automatically act to exert a resilient having but a single seam at the top; such blank thrust toward each other to close the opening being folded to provide a rectangular bottom at the top of the container; and (e) t6 provide 45 wall, two rectangular side walls, and two reca simple and efiicient means readily manipulable tangular end walls having inwardly directed flutpositively to seize the severed seam parts and ings or pleatings in their upper portions so that squeeze them flatwisely together to reclose the when the envelope is completed it is substantially top opening in the container in an air-tight or triangular in end elevation, and also four triat least a dust-tight manner.

angular two-ply web components folded up from In certain aspects thereof, particularly so far the four comer portions of the blank and laid as is concerned the provision of a container of parallel with said side walls? These foldings are satchel-type which is nevertheless self-sustaining, features of that embodiment of the container the present invention, among other things, has to of the present invention herein illustrated; that do with improvements on or variations from cercertain other aspects thereof, particularly so far as are concerned the objects (11),. (b), (c), (d)

and (e) set forth in the paragraph immediately hereinabove, the present invention, among other things, has to do with improvements on or variations from certain constructions disclosed and claimed in my copending application Ser. No. 683,733.

As brought out by certain of the appended claims, the invention can also be carried out in yarious other ways (as will be hereinafter explained in detail); but the present invention will be most clearly understood, and the various objects and advantages thereof most fully appreciated, from the following description of a preferred embodiment of the invention asshown in the accompanying drawings,-these drawings illustrating a carrying-out of the invention by the use of two substantially rectangular blanks, one of which is a heavier and stiffer builder sheet and the other of which is a relatively light and flexible sealer sheet, and with the sealer sheet acting as a liner for the completed container.

In said drawings,

Fig. 1 is a top plan view showing the builder sheet, and, overlying the same, the sealer sheet, these parts being arranged for folding as though a single blank according to the fold lines shown on the builder sheet in broken lines and on the sealer sheet in dotted lines;

Fig. 2 is a somewhat enlarged perspective view of the left half of Fig. 1, showing these sheets in course of being folded up to form a container according to the invention; Fig. 3 is a side elevation of such w container completely folded up but with the top sealing seam not yet completedwith certain internal folds indicated in broken lines, or, where the near side wall of the container is? shown broken away, in full lines;

Fig. 4 is'an end elevation, looking toward the left in Fig, 3;

Fig. 5 is an enlarged detail, showing certain parts as seen in Fig. 4, but with the top seam structure completed;

Fig. 5w is a fragmentary view similar to Fig. 5, but drawn to a different scale and exaggerated for clarity, with some of the parts in greater detail;

Fig. 6 is a view similar to Fig. 5, but showing a modified seam structure;

Fig.7 is a fragmentary perspective view, showing a seam structure as in Fig. 5, a severing indicium thereon, and an auxiliary closure device carried by and slidable along the seam structure;

Fig. 8 is an enlarged perspective detail view,

showing the parts at the left end of Fig; 7, and showing these parts sprung apart following a severing through an element of the seam structure along the length of said indicium;

Fig. 9 is a view similar to Fig. 8, showing the parts of this view and of Fig. 7, and showing a rearrangement of parts to form the pouring spout;

Fig. 10 shows said auxiliary closure device in end elevation;

Fig. 11 shows the same in bottom plan; and

Fig. 12 is a fragmentary diagrammatic view of a modification of the invention which will be fully explained later herein.

Similar reference characters refer to similar parts throughout the several views of the drawings.

Referring now in detail to that particular and now preferred embodiment of the invention selected to be shown to illustrate the invention in the accompanying drawings, a sealer sheet l5 which is strictly rectangular is employed in combination with a builder sheet it which is only substantially rectangular. The sheet i6 includes a main body portion of strictly rectangular shape except that at each of the four corners thereof there is a square notching 16a; this main body portion having an integral tab or flap lfib ofiset from a central length of one of its sides. The sealer sheet is longer and wider than said main body portion of the builder sheet l6, so that when the two sheets are arranged one above the other as shown in Fig. 1 the marginal portions of the sealer sheet along all the four sides thereof extend beyond all the four sides of the main body portion of the builder sheet, without-break or interruption all around said main body portion.

These two sheets are arranged and held in the relation shown, desirably by adhesively attaching the two sheets together all over their contacting areas, so that they can be folded up together as a single blank along the fold lines shown in light dotted lines and in lightv broken lines in Fig. 1.

It is now recommended that the builder sheet It be made of pressboard of about the thickness or weight used for the making of the presenttype six-sided side-seamed cartons for packaging one or several pounds of dry food products for delivery by the retail grocer to his housewife customer; although lighter or heavier types of pressboard can be used, and, indeed, any sheet material of the proper stiffness and strength, especially if a paper-pulp one. As to the sealer sheet, it is now recommended that the same be made of Cellophane, or hydrated cellulose, or some other relatively light-weight, thin, air-tight, tough yet.

freely flexible and smoothly surfaced substitute, or. another substitute suitable for the purposesuch, for instance, at least in certain cases, as where high resistance to softening or other deterioration from moisture is not important, thin parchmentized paper. If the two sheets l5 and I6 are to be adhered to each other before folding, either above or otherwise, and by an applied adhesive, such adhesive may be any suitable one; very satisfactory results having been obtained when said adhesive was a cellulose paste or lacquer where the sealer sheet was of Cellophane and the builder sheet was of pressboard.

These sheets l5 and iii are folded up, simultaneously and as though one blank, at both sides'of Fig. 1, as shown in connection with the left side thereof in Fig. 2; from which it will be seen that as these foldings are further completed, a satcheltype container will be fully formed, as clearly shown in Figs. 3 and 4. During these findings, the sections A, B, C, D and E of Fig. 1 become respectively, the bottom wall, the two side walls, and the two end walls of the container. The parts of the sheets lying between sections B. E, C and D are bisected by diagonal fold lines F, G, H and I into four pairs of triangular sections 1 and f, g and h and h and i and 1'. During folding up of the container, each of said pairs becomes a two-ply triangular web component capable of being arranged parallel with and alongside the' side walls B and C; and the sheets l5 and I6 are so folded that said web components are extended within the container and between the side walls B and C. Note the diagonal fold lines I and H and the web-component sections 1' and h as seen through the broken-away side wall C in Fig. 3. The end walls D and E of the container are, as seen best in Fig. 4 in the case of shown at d or e in Fig. l, in course of forming the container. Such top fluting in the end wall D is clearly seen in Fig. 2. In Fig. 4, the fold line e is seen; and in Fig. 3, both the fold lines d' and e. As the parts are viewed in Fig. 2, as will be obvious from a comparison of Figs. 1 and 2, the side wall C is much fore-shortened, in order to make the showing of Fig. 2 as little con fusing as possible.

As to the four notchings I6a of Fig. 1, both the boundaries of each thereof, one such boundary running horizontally and the other running vertically in each notching as the parts are seen in Fig. 1, become vertical, and aligned transversely of the container, when the latter is completed. Note in this connection the upper of the two notchings Ilia of Fig. 2. These notchings are desirable if not essential, in every case where the height of a side wall of the container is greater than twice the length thereof, to prevent the upper inner ends of the aforesaid web components of the builder sheet I 6' from overlapping longitudinally of the container; as it has been found that such overlapping will make difiicult if not preventthe formation of an always dependable hermetical seal at the top seam of the container. As such notchings are shown in Fig. 1, they are so made that their vertical and horizontal boundaries will all meet, when the container has been formed, in a single plane perpendicular to the length of the containerthus providing linear rather than point abutments for the web components at each side of the container, a feature most advantageous in augmenting the strength of the container and its top seam structure. Also desirably, such notchings are all of the same size, so that the plane just-mentioned will be located at a central point along the length of the container; these notchings are so shown in Fig. 1, and, consequently, their eight boundaries are all properly indicated in Fig. 3 by the line l6a of thatview.

Beyond the notchings l6a of the builder sheet IS, the sealer sheet l has all four of its diagonal fold lines continued up to the four corners of said sealer sheet, as indicated in dotted lines in Fig. 1, as shown in full lines in Fig. 2, and as made clear by the broken lines We of Fig. 3. The marginal portions of the sealer sheet, all around the entire periphery of said sheet and beyond the. main body portion of the builder sheet, are finally arranged as shown in Figs. 3 and 4; and in Figs. 3 and 4 these marginal portions are still unbroken and continuous, exactly as they were with the two sheets in unfolded condition as in Fig. 1although now various overlapping (due to the various foldings of the sealer sheet in agreement with the foldings of the builder sheet as per the dotted-line indications in Fig. 1 on the marginal portions of the sealer sheet), all around the top mouth of the container, whether such -mouth be closed preparatory to establishing the top seam structure, as in Fig. 3, or opened sufiiciently to fill the container with its appointed product.

Just preparatory to sealing the container after ithas been filled with said product, theparts are arranged as in Fig. 4. To seal the'container and establish the seam structure including such seal, a suitable adhesive, as a cellulbse paste or lacquer, is applied to the side of the flap "5b which faces the marginal portions 'of the sealer sheet l5 now upwardly protruding from the mouth of the container, and then said flap and said marginal portions of the sealer sheet are bent down and over the crest line of the container as shown in Figs. 5 and 5a; said flap being drawn very taut and said marginal portions being not only bent sharply over said crest line but forcibly and tightly compressed together at and beyond said crest line, and these parts being held in these relations until the adhesive has set-all by the aid preferably of a suitable power press and coadjuvant means of proper design forming no part of the subject-matter of the present application. There is thus provided a seam structure powerfully laterally compacted, along its entire length, of a plurality of plies of sheet material including, in addition to said flap l6b'and the upper marginal portions of the sealer sheet I5, the upper parts of said side walls B and C, the upper parts of both plies of all the web components and these last between said walls B and C, and the inwardly directed flutings at the tops of end walls D and C; and at the same time a seam structure including a tight seal for the container. Nevertheless, said seam structure and seal can be easily broken when desired, without any danger of breakdown of the container; and said seam structure can be easily partially broken without any danger of breakdown of the remainder thereof. The seam structure shown, it will be noted, is composed of a pair of substantially duplicate sets of plies, each such set combining to form a. seam-structure half running longitudinally of the top of the container and stifily upstanding from the side wall B or C immediately therebelow; while these seam-structure halves further hereinafter referred to are bound together into a single stifily upstanding seam-structure unit of the same length as the container merely by the single fairly light Weight flap |6b of easily severable material. Also, upon severing said flap for a part of its length to facilitate dispensing of the contents of the container, the seam-structure halves thereby partially freed for divergence as hereinafter explained remain stifily upstanding and relatively immovable ply-collections each constituting a means for interlocking the side walls B and C immediately therebelow and all parts of the container with the unsevered part of the seam,

structure.

The new container, as delivered to the purchaser of the same, and its contents, and even after a partial severing as above of the top seam structure, is not only self-sustaining but of really surprising strength. The top seam structure is really a relatively massive and stiffly upstanding rigidifying rib extending along the entire length of the crest line of the container, even when containing no metal elements, as is preferred; said seam structure being so formed and located as to ccact in a very important .way with the inserted web components and the various other folded parts of the container and their relative inclinations to make the entire container resistant to the slightest damage from the most severe external pressures and blows. As already indicated, arranging the web components within the container, that is,,b'etween the side walls B and C rather than exterior thereto, increases greatly the ruggedness of the container and the seam structure, insures a tighter seal at the latter, and gives a more attractive package. Y

In any such container, however strong and rugged it be as a self-sustaining one, a single fairly light-weight'pressboard flap, as the flap ltb, is all that need berelied on, as already stated, not only finally to establish the important i of an end opening at its top, which is particularly desirable in the case of certain products, the top seam and seal can be deliberately broken along an end length thereof, merely by upthrust of a knife inserted in the inwardly directed pocket established by the top pleating of an end wall D or E-e'asily and quickly because the resistance offered to the out being made by the knife edge is comparatively slight, and safely because amply withstood by the container due to the self-sustaining character thereof and of the seam structure. Such out, being between the aforesaid halves, may be continued from end to end of the seam, to provide a completely open top mouth. To the wielder of the knife,

say anordinary and not particularly sharp kitchen knife, this resistance is hardly felt, even though the knife edge has to go through several plies of the sealer sheet l5 as well as through the flap lfib.

Although as shown said flap I6!) is integral with the builder sheet l6, of course a suitable substitute, in the form of a single pressboard flap separate from the blank It, or one otherwise constituted than as a single ply. member, can be employed.

Referring to Fig. 6, such a single but substitute flap is shown, for example, as being in the form of a separate strip l6, of pressboard or other suitable sheet material (and a material readily severable or not, according as the container to which it is applied is intended to be opened for dispensing either at an end of its stop seam structure or elsewhere). Such strip it, as long as the top of the container, is applied inverted U-fashion to complete the seam structure as shown in Fig. 6 and according to the principle of the invention as above explained, after being coated on its innersurfaces with an adhesive of the kind already explained or otherwise suitable to bond the strip, of whatever material it be made, in place as the crown-piece for the completed seam structure. The marginal folded portions of the sheet i5, represented as a single fold in Figs. 5 and 6, are illustrated, in greated detail in Fig. 5a. Where such strip is not integral with the builder sheet, the latter can have an outline merely corresponding to that of the main body portion of the blank I 8 of Fig. 1.

In carrying out the invention, the sealer sheet can be the wrapper sheet relative to the builder sheet, as well as the liner sheet therefor, as has been described and asillustrated in the drawings. All the advantages of the invention will be obtained in either case. It is recommended that the sealer sheet be the liner sheet where the container is packed with a wet product especially when the builder sheet is such a rather absorbent material as pressboard; but where the container is packed with a dry product, it is recommended that the sealer sheet be the wrapper sheet, to

increase the attractiveness of the container. Also, of course, it is within the invention to employ two sealer sheets, one as a wrapper and the other as a liner for the builder sheet.

As shown in Figs. 7 to 11, the new container includes features which are very valuable where the container is packed with a dry food product of free flowing character, such, for instance, as tea, coffee, sugar, salt, prepared breakfast foods, and so on, or with a wet food product such as milk a partial dispensing of which from time to time may also be desired. As has already been explained, the top seam of the container can be broken along an end length thereof very quickly and easily and safely by an ordinary knife. In Fig. '7, the flap 16b is shown as having a printing or other indicium ll extending along the crest line of the seam structure and throughout an end length ofthe latter overlying the pocket at the fluting at the upper end of end wall D. When a kitchen or other knife, cutting edge uppermost, is insertedin said pocket to the depth permitted by the upper portion thereof, and an upcut is made with said knife, the seam structure is opened by a clean cut along the lengthof the indicium II, but the seam structure is not otherwise damaged or anywhere weakened beyond dividing it cleanly longitudinally in half along the cut. But now these seam-structure halves can be, readily diverged, as shown'in Fig. 8. 'I'hereupon, the pleating at the top of the end wall D is freed for pull-out reversal to form a pouring spout as shown in Fig. 9. To facilitate such pull-out, this pleating is shown as provided at IS with a pull device or handle here comprising a thin string or cord l8 knotted at l8 and projecting through a suitable aperture in end .wall D near the fold line (1'. The string It, just ahead of the knot l8, can be fitted tightly in said aperture, and, if the contents of the container are such that the latter should be tightly sealed at said aperture, the aperture can be closed and the string locked in place therein in any desired way, for instance,'by applying to the string just beyond the outer end of said as a cellulose paste or lacquer, which, upon setting, will lock the string in the aperture and at the same time plug up the latter. Such a sealing of said aperture can be dispensed with, even where the container must be tightly sealed at the point of emergence of the string therefrom,

in any container wherein a sealer sheet is a liner for the builder sheet and the knot IB' lies between these two sheets last-mentioned. Although a knotted string is now preferred as the pull-out device or handle for' the pouring spout, any other suitable pull-out device which is practicable can be substituted therefor; but when the same, or an attaching means therefor, pierces or passes through one or more apertures in the builder sheet, such aperture or apertures can be prevented from breaking the seal of the container, wherever that prevention is important, by an arrangement such as one of those last described.

In Figs. 8 and 9, a sealer sheet as a liner is assumed to be present, to have all the views of the drawings agree. However, in these Figs. 8 and 9, the showing has been made 'asthough such sealer sheet is absent, in order to make these views as clear as possible.

aperture a gob of some suitable adhesive, such.

As soon as a desired dispensing by way of the spout of Fig. 9 has been had, and the pleating at the top of end wall D has been again reversely folded toward its normal condition as shown in Fig. 4, there is an important snapping action of the parts, particularly if the builder sheet be folded up from pressboard or anequivalent material as above described; that is, the side walls B and C spring back into parallelism along the line of the cut in the seam structure, thereby automatically insuring a closing of the container top in at least a dust-tight manner.

In order positively and even more securely and tightly to close the opening in the container top, following the spring action just explained, a temporary closure device is provided, preferably as shown in Figs. 7, 9, 10 and 11, of a kind to be carried by the seam structure for sliding therealong, This is a U-shaped clip l9, preferably of light-gauge spring metal, as sheet tin. The

indicium: I1 is specially useful in acting as a warning signal that this clip l9 should be so positioned on the seam structure, that is, beyond the inner end of such indicium, during the cutting of the seam by an upcut of a knife edge as above described. A sliding closure of the type illustrated by clip i9 is exceedingly practicable,

and is now preferred. Following an arrangement of the parts as shown in Fig. 9, and following a partial dispensing by way of'the spout thus created, and following a reversal of these parts to the condition shown in Fig. 8 and the then occurring automatic closing of the container top, the clip l8, winch is here shown as having a roughened gripping surface at a side thereof, is instantaneously smoothly slidable along the seam structure and toward the left in Fig. 9 so as to straddle the entire length of the severed length of the seam structure and very tightly close the opening therein and hold the latter thus closed until the next dispensing is desired. At that time, said clip has merely to be slid along the seam structure in the opposite direction and until it is beyond the inner end of the indicium 11.

As between a sliding closure, and a pivoted or ro-' tatable one (such, for instance, asshown in my aforesaid application Ser. No. 683,733), the former has as one unique advantage that there is no necessity for sending a pivoting rivet or grommet through the seam structure or any other part of .the container. A sliding closure, also, is generally easier to manipulate, particularly for temporarily closing the top opening in the seam structure after a partial dispensing of the contents of the container. The clip 19 or an equivalent may be variously slidably attached to the seam structure to avoid any chance of accidental loss thereof, for instance, by longitudinally slotting one of the side extensions thereof-and sending through the seam structure a rivet or the like to engage such slot, or by giving such a side extension of the clip an inwardly directed projection movable along a score line or other long-itudinal indentation at a side of the seam structure. However, it is now preferred to provide a clip equipped with means against accidental loss thereof, as here shown; that. is', having an edge portion J9 along. the bottom of; one of its side extensions bent inwardly and upwardly through 180 degrees to provide a shoulder to contact with and ride along under the under edge lib of the flap lib, and having the ends ofboth of its sides at their bottoms outwardly canted or curled slightly as shown to facilitate smooth sliding or... the clip in either direction along the seam structure, these cantings or ou'rlings being marked IS" in Fig. 11.

When the container of the present invention is employed for the packaging of lubricating oil and other products where the contents of the container are to be advantageouslydispensed at one time, one or more of the features hereinabove described in connection with Figs. 7 .to' 11 may be omitted. That is to say, there are includedwithin the invention the new container as illustratively embodied in Figs. 1 to 4, and 5 or 6, in and ofitself, as highly advantageous for the packaging of lubricating oils and other products where the contents of the container are dispensed at one time, either by cutting the top seam structure or by cutting away some other part of the container in such a way, for instance, as to prevent fraudulent substitution of the orderedgoods; and also such container in combination with one or more of the features illustratively embodied in the container according to Figs. 7 to 11. And in the former case, in order further to prevent such fraudulent substitution, the seam structure can be made non-severable in any suitable way, as by crimping a metallic U-clip thereon in a way to prevent its removal without destruction, either as a substitute for or an adand sealer sheets of a certain type, the former marked I61 and the latter l5jit is pointed out that the contain r of the present invention can be provided of any relative dimensions as to length, height and thickness such length being the dimension of the side walls, from end wall to end wall. As to the aforesaid web components of the builder sheet, these can always be folded up and laid against the side walls of the container, if with greater and greater diminution of the length of said side walls as compared to the height thereof, the corner notchings of the builder sheet are correspondingly increased in size. As to the sealer sheet, this also can always be adapted to any desired relation between the height and length of the side walls of the container, and without corner-notching or cutting away said sealer sheet anywhere; this simply by giving extra foldings to the four corner portions of the sealer sheet where the latter project so far beyond the corner notchings of the builder sheet that they would otherwise extend beyond the end limits of the container. In these connections, note in Fig. 12 that the blank portions there shown include a side wall C much greater in height, or vertically, than in horizontal length or between the end wall structures. Nevertheless, lt is clear that the web-component sections 112. and -m' of the builder sheet can be folded pursuant to the invention to lie as shown at m", and to have the boundaries band I) of their notching align at b"; and that although the sealer sheet shown would have to be folded about such a long diagonal line as that extending between the points 0 and 0, equal in length to the diagonal line 17-21, this apparent dimculty is easily taken care of by further folding the sealer sheet, afterfolding it along the line 0-0, simultaneously along the lines q-r and q-s, thereby accommodating the sealer sheet to the end limits of the container-by throwing the point p to the location 11-.

Theseal'er sheet may possibly in certain cases be present as several sheet portions, overlapped or overlapped and secured together; but in most if not all cases it is desirable if not essential, and it is certainly recommended, that such sealer sheet be a single integral sheet.

I have'made particular reference hereinabove, in the statement introductory to the short description of the views of the drawings, that, as brought out by certain of the appended claims, the invention can also be carried out in various ways other than those illustrated in such drawings. Certain of the variations thus alluded to are mentioned in the paragraph immediately preceding. Whenever herein a hermetical seal is referred to, there is meant either truly such a seal, or one which is at least liquid tight or tight against the filtering therethrough of very minutely pulverized material.

Although I have hereinabove indulged in considerable particularities of description, as to materials, shapings, foldings', fitments and other elements, it is to be emphasized that these are for purposes of illustration merely'and to express present preferences, and not intended to be made by way of limitation except as incorporated in the appended claims. The scope of protection contemplated is to be taken solely from said claims, interpreted as broadly as isconsistent with the prior art, and in accordance with the essentials of the present invention as hereinabove indicated.

I claim:

1. A self-sustaining container folded up from a plurality of blanks one of which is a heavier builder sheet and another of which is a lighter sealer sheet, said builder sheet including a main body portion of substantially rectangular shape and said sealer sheet being of similar shape but larger than said main. body portion and laid thereagainst to present marginal portions of the sealer sheet beyond peripheral edges of said main body portion; both said sheets being folded up as though a single blank along vertical fold lines, horizontal fold lines and diagonal fold lines to form a satchel-type container having end walls inwardly pleated at their tops and closed all over except for a filling mouth along the top length thereof; certain of said fold lines throwing sections of the builder sheet to establish a two-ply web component between each end of an end wall and the adjoining side wall; these web components lying alongside the side walls so that the.

upper portions of all said walls and of said web components are all-brought together to form a I rigidifying rib coextensive with said mouth; the

marginal portions of the sealer sheet projecting above said mouth all along the length thereof and being bent down over one side of said rib;

' and there being a closing flap overlying the top of said mouth and rib and secured to saidrib to hold said marginal portions downbentas aforesaid and to bind all the parts of the-rib into a single structure stifliy upstanding along the top line of the container'and with all the component. parts of such single structure relatively immovable. I v

2. The container deflnedin claim 1, wherein the builder sheet is notched at corners thereof but the sealer sheet is unnotched at the corners thereof corresptinding to the notchedporners of the builder she 3. 'Ablank structure for the folding therefrom of a satchel-type container havingi'a rectangular bottom and similar side and, endwalls with said end walls inwardly pleated attheir tops to make the container substantially triangular in end elevation andwith the four corner portions of said portions projecting beyond the four sides of the rectangular outline first-mentioned.

4. A satchel-type self-sustaining container 4 folded upfrom a substantially rectangular blank of a comparatively stiff and somewhat resilient material such as pressboard to have side walls mutually converging toward the top line of the container, end walls each having an inwardly directed fluting at its top, and substantially triangular two-ply web components extended alongside said side walls; said container having means for sealing the same along said top line thereby to couple tightly together the upper portions of said fiutings, said side walls and said web components to make a rigidifying rib structure for the container including a closing seam therefor; said sealing means including a sealing element readily severable along said line, by inserting a knife within such a fluting from the exterior of the sealed container and by upthrust of said knife, thereby to break said seam and open said structure by dividing the same substantialy evenly along a length of said line overlying the-fluting last-mentioned so that the seam-structure parts thus divided can be diverged without breakdown thereof to expose said fluting for reversal thereof to form a pouring spout; both said seamstructure parts when thus diverged being resiliently ,urged toward their original parallelism because both include one of said web components and one of said side walls always maintained in close fiatwise contact.

5. A container incorporating a blank structure folded to provide a rectangular bottom wall and similar side and end walls for the container, with said end, walls inwardly fluted at. their tops to make the container substantially triangular in end elevation at its top and to give the container a satchel-top; said flutings and the. upper 'portions of said side walls presenting a fillin'g mouth along the entire length of said top; said filling mouth having a closing flap at one'side thereof;

said blank structure including-a builder sheet of heavier material, and a sealer sheet of lighter material; said builder sheet forming said bottom, side and end walls and thereby establishing said satchel top, and said sealer sheet being shaped and arranged to run around the upper marginal portions'of said walls and to follow said flutings while extending its own marginal portions above said filling mouth,.whereby when said mouth is closed by downfolding and securement of said flap the upwardly extending marginal portions of the sealer sheet are downbent and folded. on

and drawn tight over edge portions of said-filling mouth for disposal under the downfolded fiapto hermetically seal said satchel-top.

6. The container defined in claim 5, wherein said fiap is of readil'yseverable material so that by insertion and upthrust of a knife inserted within one of said fiutings said fiap can be partially severed and said mouth correspondingly opened for partial dispensing of the contents of the container, and wherein there are means slid- ,thus to temporarily reseal the container all over the filling mouth after such dispensing.

7. A satchel-type self-sustaining container folded up from a blank of a comparatively still and somewhat resilient material such as pressboard to have side walls mutually converging toward the top line of the container and end walls each having an inwardly directed fluting atits top; said container having means for sealing the same along said top line thereby to couple tightly together 'the upper portions of said fiutings and said side walls to make a rigidfying rib structure for the container incorporating a filling mouth and a closing seam therefor: said sealing means including a sealing element readily severable along said line, byinserting a knife within such a fluting from the exterior of the sealed container and by upthrust of said knife, thereby to break said seam and partially reopen said mouth by dividing the rib structure where it overlies the fluting last-mentioned so that said rib structure can be diverged without breakdown of the containerto expose said fluting for reversal thereof to form a pouring spout; said sealing means further including a sealer sheet of lighter material than said blank,-

said sealer sheet being shaped and disposed to lie at least partially within the container in the vicinity of said rib structure and to participate in the formation of said rib structure by foldings of marginal portions of said sealer sheet about edge portions of said blank incidental to the establishment of said rib structure. J

8. A container comprising a two-ply rectangular blank including a form-defining relatively rigid sheet, and a pliable sheet having its outer margin extending beyond the boundary edge of the first sheet and coacting therewith, said sheets having therein registering fold lines and being foldable thereon to provide a rectangular bottom, opposed end walls having at their top portions inwardly turned fiutings, opposed side walls having the ends of their top portions disposed opposite said fiutings, and inwardly folded triangular sections disposed between the re-- spective end walls and side walls, said sections having their top portions disposed adjacent the second-mentioned portions whereby to provide a filling mouth between said flutings, said margin being continuous and disposed above said edge to provide a guide for the mouth.

9. A container comprising a two-ply blank including an outer relatively rigid sheet having a rectangular body or main part, a lining and sealing sheet cooperating with the first sheet and having its outer margin extending beyond the outer boundary portion of said bodypsaid sheets having therein registering score lines and being folded thereon to provide a bottom, opposed end walls having inwardly closed fluted tops,- opposed side walls having the ends of their upper portions disposed adjacent said tops, inwardly folded triangular sections disposed between the respective end and side walls. said sections having their upper portions disposed between, the first upper portions and s' d tops, said boundary portion being continuou along said tops and said upper portions, said extended margin being turned onto the upper portion of one of said side walls'along the length thereof, and a flap extending from the upper portion of the other side wall, said flap being bent over said margin and engaged thereon in sealing relation.

top-portions disposed above and parallel with the longitudinal central line of said bottom. the tops of said end walls being fluted and closed inwardly between the ends of the tops of said side walls, and opposed triangular sections disposed between the respective end and side walls,

said sections having bottom points disposed at the corners of said bottom, said sections having therein notches at the points opposite the first points, the boundary edges of the notches being vertically disposed, and the edges of the opposed notches being disposed at the centers of the tops of said side walls. a

11. A container comprising a two-plyblank including a form-defining stiff sheet having a body or main part, a lining sheet having its outer margin extending beyond the outer boundary portion of said body, said sheets having therein registering score lines and being folded thereon to provide a rectangular bottom, sidewalls rising from the longer boundary sides of said bottom, end walls rising from the shorter boundaries of said bottom, said side walls having their top portions disposed above and parallel with the longitudinal central line of said bottom, the tops of said end walls being fluted and closed inwardly between the endsof the tops of said side walls, and opposed coacting pairs of triangular sections disposed between the respective end and side walls, each opposing pair of said sections having point portions of the lining sheet thereof overlapped at the top centers of said side walls,

- 12. In combination, a sheet of relatively rigid material having therein score lines and being foldable thereon to provide an outer form-defining container member including a rectangular bottom; coacting side walls, end walls and interposed sections rising from said bottom and having their top portions forming a mouth above the longitudinal central line of said bottom; a lining sheet larger than the first sheet and disposed in attached relation therewith, said lining sheet having its outermargin extending substantially beyond the first sheet; and means for sealing said mouth, said means including said margin.

13. A container having an outer sheet of pressboard forming practically fiat sidewalls, said walls having their top portions inclined inwardly to form an elongate month, end walls havingtheir top portions folded inwardly and disposed flatwise between the ends of the first portions; a

pliable sheet larger than the first sheet and forming a complete lining therefor, said lining sheet having its outer margin extending above said portions: and means for sealing said mouth, said means including said .margin, the latter being bendable laterally and downwardly onto the top of one of said side walls, and a flap extending from the top of the other side wall and being adhesively attachable over said margin.

14. A container comprising in combination a body of fibrous material including opposed rectangular side walls having their top portions inclined inwardly to form an elongate mouth, end walls having their top portions folded inwardly and being disposed fiatwise between the first portions, said walls having the upper margins of said portions bendable laterally and downwardly onto the top part of one of the side walls, said margins forming a closure rib, said material being severable and the inwardly folded portions forming opposed recesses below the ends of the rib, said recesses adapted to receive a severing instrument, and a metal member centrally gripping a small portion only of said rib and the top part of the opposite side wall, so that an instrument may be inserted in one of saidrecesses, whereby to partly sever the rib so as to provide an opening, said member, being adapted to stop the instrument.

15. A closure for a container comprising a sheet of pressboard which is foldable to provide an outer member including opposed side walls having their top parts forming an elongate mouth, and a lining sheet foldable with the first sheet; said closure including an outer margin of the lining sheet, said margin being extended beyond the top portions of said parts, said margin being folded laterally and downwardly onto one of said partsto form a rib thereon; a sealing clip having one side engaging the other opposite part, and an opposite side engaging said rib, said latter side having an inturned flange disposed below said rib.

16. A closure for a container comprising a sheet of fibre board which is foldable to provide an outer form defining member including opposed side walls having their top portions forming an elongate mouth, and a lining sheet foldable with the first sheet and having its outer margin extending therebeyond; said closure including said margin which latter is extensible above said portions, said margin being folded laterally and downwardly onto one of said portions, a flap extending from the opposite portion and being turned downwardly over said margin whereby to form a rib; and a sheet-metal clip of U-shaped cross-section, said clip having one of its legs engaged against the last-mentioned portion, the other leg of said clip being engaged against said rib, and a flangeturned inwardly from the last-mentioned leg, said flange being engaged below the bottom of said rib.

17. A severably openable container comprising two side walls having substantially engaged top portions, there being a flap extending from one portion and engaged on the outside .of the other portion, said portions and the flap forming a rib, end walls including top portions which form reentering pockets between the first portions, so that the flap may besevered above at. least one of the pockets to open the container, and a metal clip slidably embracing said rib, whereby the clip may be inoved to a predetermined position to limit the severingof said fiap.

18. A container according to claim 17., wherein the metal clip is substantially as long'as the top portions -of the side walls, said clip adapted to form a hand grip forthe' container. I

19. A container according to claim 1'7, wherein the clip is U-shaped in cross-section, one of the legs of the clip having extending completely 1 along the inner face of the bottom thereof an inwardly bent edge portion, whereby to engage below the edge portion of the flap, said clip adapted to form a hand grip for the container.

20. A severably openable container of satchel type comprising opposed end walls having at their tops accordion folds, the topedge portions of said folds being closed together or adjoining and there being outwardly facing recesses below said portions, opposed fiat side walls. having their top parts closed inwardly on said edge portions, a closure flap extending from one of said parts and being adhesively attached to the opposite part, so that the flap maywbe severed above one of said recesses substantially between two of said ad-' joining portions; and a pull cord attached at the innermost end of one of said recesses to the associated fold, whereby the latter may be pulled out to form a pouring opening.

21. A'severably openable container of satchel type comprising an outer sheet of paper-board including opposed end walls having at their tops accordion folds, the top edgeportions of said folds being in adjoining relation and there being outwardly facing recesses below said portions; opposed side walls having their top parts closed inwardly on said edge portions, a fiap extending from one of said parts and being folded over said adjoining portions and adhesively, attached on the opposite part, so that the fiap may be severed above one of the recesses substantially between two of said adjoining portions; and a pull cord having its inner end attached at the innermost end of one of said recesses to the associated fold, whereby the other end of the cord may be manually grasped to put out the last-mentioned fold, so as to also extend the side walls thereat and form a pouring spout.

22. A severably openable container comprising a two-ply rectangular blank including a formdefining relatively rigid foldable sheet, and a pliable sheet having its outer margin extending substantially beyond the first sheet; said blank providing a rectangular bottom, end walls having at their top portions accordion folds, the top edge portions of said folds being in adjoining relation and there being outwardly facing recesses below the edges of said portions, opposed side walls having their top parts closed inwardly on said portions, a flap extending from one of said parts and being passed over and close to said edges, said flap being adhesively attached being severable over and substantially between two of the edges, and a pull cord including a.

free outer end and having its opposite end attached at the innermost end of. one of said recesses to the associated fold, whereby said free end may be manually grasped to pull out the last-mentioned fold, so as to also extend the side wall parts thereat and form a pouring open-.

23. Asatchel type container constructed of a compound rectangular blank comprising a lining sheet, and an outer relatively stifi form-defining sheet comprising opposed side walls, and opposed end walls including sections which have their top portions accordion-folded, said sections having continuous with the sides thereof infolded web components, said components being also continuous with the end" portions of said side walls, said components having in their four outer corners angular notches, so that when said components are folded inwardly the associated .boundary faces of each notch may register verponents being disposed in abutting relation on the transverse vertical central plane of the container, the top portions of said components being horizontally disposed on the outer sides of the top portions of the accordion folds; said side walls having their top parts engaged flatwise against the top horizontal portions of said cornponents, and a closure flap extending from one of said parts and being passed closely over said horizontal portions, said flap being adhesively attached on the opposite top part.

24. A container constructed of a compound blank comprising an outer relatively stiff formdefining sheet including a rectangular body part, and a rectangular, inner lining sheet cooperating with said part and having an outer margin extending therebeyond; said sheets providing a rectangular bottom, side walls rising from said bottom and having their top portions adjoining, end walls rising from said bottom and having their top parts fluted and closed inwardly between said portions, said margin being extended beyond said portions and beyond the tops of the fluted parts so as to form a sealing member, said member being folded over onto the outer surface of one of said portions, and a flap connected with the other portion and having a greater longitudinal dimension than that of said margin, said flap being folded over the folded margin and being sealed at its-transverse end part on said surface.

25. A container comprising a bottom and having opposed side wall folds, opposed end wall folds, triangular web components connecting said folds and being folded inwardly therebetween,

said side folds having their top portions adjacently disposed, the end foldshaving their top parts accordion folded and being disposed between said portions; and a flap connected with one of said portions and being passed over the top edges of said components and said accordion folds said edges being in adjoining relation whereby to provide a closure, said-flap having sealing engagement with the outer surface of the opposite portion.

- 26. A pouring container comprising opposite side walls; an intermediate wall connecting the side walls and inwardly turned between said opposite walls to form a. recess extending to the exterior of the container; a. closure flap of severable material extending from end to end of, and attached to one of said opposite walls and passed over the free edges of theintermediate wall and secured to the other opposite side wall and adapted to be easily severed at the portion over the recess, whereupon the inwardly turned intermediate wall may be pulled outwardly to form a pouring spout; and a pull means secured to the intermediate wall near the inner part of the recess for pulling said wall outwardly.

27. A pouring container comprising folded first and second opposite walls; intermediate walls connecting said opposite walls each intermediate wall being inwardly turned at its top part between said opposite walls to form a recess extending to the exterior of the container and having edge portions adjacent to each other; a flap of severable material extending from end to end of, and attached to, said first opposite wall and passed over the edges of the intermediate walls and secured to the top margin of the other opposite wallfrom end to end of the latter; said fiap being longitudinally severed immediately over said edges of one of said recesses to allow the adjacent inwardly turned intermediate wall to be pulled outwardly to form a pouring spout, the remaining portion of the flap being unsevered; said recess at the severed end of the flap being open to the exterior adjacent to the uppermost part of the inner face of the flap at said severed end.

28. A pouring container comprising folded first and second opposite walls; intermediate walls connecting said opposite walls, each intermediate wall being inwardly turned at its top part between said opposite walls to form a recess extending to the exterior of the container and having edge portions adjacent to each other;

a closure flap of severable material extending from end to end of and attached to said first opposite wall and passed over the edges of the intermediate walls and secured to the top margin of the second opposite wall from end to end of the latter; said flap being severable immediately over said edges of one of said recesses so that the adjacent inwardly turned intermediate wall may be pulled outwardly to form a. pouring spout suitable for pouring fine material.

DURYEA BENSEL. 

